SERVICE LINK SELECTION CONTROL METHOD AND DEVICE

Disclosed are a service link selection control method and device. The service link selection control method comprises: receiving a service link selection strategy sent by a cooperative device, wherein the service link selection strategy contains a correlation among the three, i.e. first strategy context information, a first application type and a first service link, the first service link being a path composed of a forwarding device and a value-added service device through which a first service flow need to pass, the first service flow coming from a user matching the first strategy context information, and the type of the first service flow being the first application type; receiving, by a PCRF unit, the first strategy context information, and determining a service link selection control strategy according to the first strategy context information and the service link selection strategy, wherein the service link selection control strategy contains a correlation between the first application type and the first service link; and sending, by the PCRF unit, the service link selection control strategy to a flow classifier. The method above can avoid passing through unnecessary devices.